These were replaced in 1940 with two twin-mount Type 96 25 mm AA guns.

Her Type 96 25 mm AA guns were increased to a total of 11 triple-mounts and 17 single-mounts.

At the same time, the two 3.5-meter rangefinders on the forward superstructure were replaced by directors for the 25 mm AA guns.

Ten single mounts for the naval version of the 37 mm AA gun was also fitted.

The design was equipped with thirty-two 25 mm AA guns.

The 25 mm AA guns were controlled by a Type 95 director that was also introduced in 1937.

It lacked 360 traverse and its muzzle velocity fell behind that of even the old 76 mm AA gun model 1915/1928 (730 m/s).

The 3-inch anti-aircraft gun amidships was also removed, but the number of 20 mm AA guns was increased to six.

The number of Type 96 25 mm AA guns was increased to 38 barrels.

Her anti-aircraft defenses consisted of one C30 20 mm AA gun.